fix(firebase_ui_auth): actionsBeforeDelete callback

[khanliKU]

Description

Add actionsBeforeDelete callback to ProfileScreen and DeleteAccountButton

Related Issues

N/A

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Breaking Change

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[khanliKU]

I wanted to provide some additional context:
In my application, I needed to perform some cleanup work after the user accepted the "delete user" dialog. I wanted to ensure that all user records were cleared in the Firestore database, so I added an actionBeforeDelete callback. I wanted to share it with the community.

[khanliKU]

I am waiting for this to be merged.

[github-actions]

Hello 👋, this PR has been opened for more than 2 months with no activity on it.

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